The Lian Li O11 Vision is the objective winner of this comparison, securing more category victories across the evaluated specifications. Its most significant advantage lies in storage capacity, as the Lian Li O11 Vision offers 100% more 2.5" drive bays than its competitor. This structural design choice provides a substantial increase in internal mounting flexibility for users who prioritize high-density storage configurations within their system build.

Users who require extensive drive support should select the Lian Li O11 Vision for its superior bay count. Conversely, those who prefer a ready-to-use cooling solution should choose the Phanteks G400A, which provides a 100% advantage in included fans. By opting for the Phanteks G400A, builders gain immediate airflow functionality out of the box, whereas the alternative requires additional hardware purchases to achieve a comparable cooling setup.